what f stop? you didn't shoot at f/5.6 did you? cuz that's wide open. and that 55-200 SUCKS wide open at any length

-edit- yes, you did. wtf. of course the 80-200 is going to be sharper. not just because it's a WAY better lens, but just purely because you're shooting the 55-200 at it's extreme end wide open. what did you expect. close to f/8 and report back